Your home toilet consists of two major parts: the bowl unit that rests on the floor, and the upper tank that holds the water that is released each time you flush the toilet. The bowl is little more than a solid piece of porcelain drain fixture with no moving parts at all. With only a few exceptions, there aren't many repairs that involve the bowl. The tank, on the other hand, is where two important valves are located, as well as the handle that initiates the flush action. Here is where most of the toilet repairs occur. You might be surprised to learn that most toilet problems are fairly easy to fix yourself.
Newer style toilets can differ greatly in terms of the flushing design and parts. It's always a good idea to know the make and model of your toilet before you start to work on it. The manufacturer's name is usually stamped into the porcelain, and the model appears on the underside of the tank cover. Before you can begin repairs, it's important to have a basic understanding of how your toilet tank works. The toilet tank's function is to hold a quantity of water until you flush the toilet, at which time the water in the tank rushes down through an opening in the bottom of the tank and into the bowl, forcing waste out of the bowl and into the home's drain and sewer lines. There are two major toilet parts in the tank that make this possible: the flush valve and the fill valve. The toilet fill valve is the mechanism that fills the tank with water. It is also known as a "ballcock" or a "refill valve." The fill valve is usually located to the left side of the tank as you look down from above with the tank lid removed. Fill valves comes in four basic variations:
Whatever the design, the fill valve works to automatically open the water supply valve when the water level falls in the tank during a flush, then shuts off automatically when the water level rises to a specific level in the tank. Depending type of design, the valve is operated either by a floating ball or a float cup that moves up and down with the water level in the tank. Floatless fill valves operate by sensing water pressure at the bottom of the tank. If you remove the tank lid and watch what happens inside the tank during the flush cycle, you will quickly understand the mechanics of how a toilet flushes. Page 2
As DIY tasks go, fixing a running toilet can be relatively easy, though many beginners may have trouble taking apart the toilet and putting it back together, which is why this project is better suited to individuals with some plumbing experience. Typically, a running toilet can be caused by issues with three main parts inside the tank:
If you need to replace any parts of the toilet during this repair, make sure to find compatible parts to avoid causing further issues. The cost is minimal for new parts and can help you save money on water bills in the future when the toilet stops running.
It may seem like a minor problem, but it's actually bad news for a toilet to keep running continuously. Unless the problem is addressed, it will never stop on its own. Your toilet may squander literally hundreds of gallons of water. Fortunately, stopping a toilet from running usually costs just a few dollars. To better comprehend why these problem parts cause the toilet to run, it's necessary to have a clear understanding of exactly how a toilet works. It's a fairly easy matter to understand a toilet's working parts by simply removing the tank lid and examining the parts inside:
A constantly running toilet indicates that the system is either allowing water to pass continuously through the flush valve flapper or that the water within the tank is flowing into the overflow tube. You can quickly check whether the excess water is flowing into the toilet bowl or into the overflow tube by putting a few drops of dye into the tank. If the colored water flows into the toilet bowl, then the issue is likely with the flush valve or flapper mechanism, but if the water in the toilet bowl remains clear, the problem is with the fill valve or overflow tube system. Some Toilet Problems Are Easy to Fix Yourself
The overflow tube is a hollow tube that is connected to the flush valve. It's designed to prevent the toilet tank from overflowing if the fill valve does not turn off. There are several reasons why the water may be flowing into the overflow tube and causing the toilet to run.
The flush valve is an assembly within the toilet that consists of an overflow tube, tank-to-bowl hardware, a tank-to-bowl gasket, a flapper, and a chain that connects to the flapper. The main purpose of a flush valve is to open the flapper to allow water to flow into the toilet bowl when the toilet is flushed and to close the flapper when the toilet tank is empty to allow the toilet tank to refill.
The fill valve controls the flow of water into the tank from the main water supply. It's designed to continue filling the toilet until the float arm or float cup reaches the set level, but a broken valve may continue running non-stop or may even turn on and turn off inconsistently. The excess water flows into the overflow tube, preventing the tank from overflowing, but the toilet will keep running.
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